Display screen with a graphical user interface



FIG. 1 is a front view of a display screen with a graphical user interface, showing our new design;

FIG. 2 is a front view thereof, wherein a portion of the environment is in a second position;

FIG. 3 is a front view thereof, wherein a portion of the environment is in a third position;

FIG. 4 is a front view thereof, wherein a portion of the environment is in a fourth position;

FIG. 5 is a front view thereof, wherein a portion of the environment is in a fifth position;

FIG. 6 is a front view thereof, wherein a portion of the environment is in a sixth position; and,

FIG. 7 is a front view thereof, wherein a portion of the environment is in a seventh position.

The broken line showings of the control unit, display screen, and various features of the graphical user interface are included for the purpose of illustrating environmental structure and portions of the article. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 